The rooms are comfortable and look very new. As others have said, though, there are essentially no elite benefits (no bkfst) and the area nearby is very quiet/dull (I suppose you could just hop on the subway for a few stops). They were reluctant to give us early check-in and do not provide U.S. power adapters (but do sell them). It's ok as free cat-4 night or maybe with LNF; otherwise, it seems expensive compared to other options in Berlin.